- Stopwatch Measure times precisely
- 20 ATM Water resistant to 200 metres
- World time Times around the world at a glance
Casio G-Shock GM-2100B-3AER • Men's Watch
Extreme Shock Resistance • World Time Function
Model: GM-2100B-3AER
incl. VATplus shipping
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Casio G-Shock
Description
The Casio G-Shock GM-2100B-3AER is a men's watch that combines extreme robustness with a distinctive style. Its octagonal, metal-clad design is a tribute to the classic G-Shock and offers unparalleled shock resistance thanks to the Carbon Core Guard structure. Equipped with practical features such as a world time function, this wristwatch is the ideal companion for men who value adventure and precision.
Special features of the Casio GM-2100B-3AER watch
- Extreme Shock Resistance: The Carbon Core Guard structure reliably protects the module from shocks and vibrations.
- World Time Function: Displays times in up to 29 different time zones, perfect for travelers and globally connected wearers.
- 20 Bar Water Resistance: The watch is perfect for free diving without equipment and withstands high water pressure.
This watch belongs to the popular G-SHOCK 2100 series, known for its iconic octagonal design in a robust metal finish.
Care instructions
Care Instructions for Wristwatches
Care & Cleaning
- Daily: Wipe case and bracelet with a soft, dry cloth to remove dirt and perspiration.
- Water-resistant watches: Clean with mild soapy water and a soft brush, rinse, dry thoroughly.
Important: Screw down the crown firmly beforehand!!! - Not water-resistant: Clean only dry or slightly damp, do not use water or cleaning agents.
- Avoid: Aggressive agents, perfume, cosmetics, and heat.
- Leather straps: Do not soak, clean only slightly damp, and dry away from heat.
- Water resistance: Do not wear when showering or bathing, have it checked annually.
- Battery (quartz): Have a dead battery replaced immediately.
- Mechanical watches: Service by a master watchmaker every 5 years.
Storage & Handling
- Store watches separately, not directly with other jewelry (risk of scratches).
- When winding mechanical watches, take them off; do not leave the crown pulled out.
Jewelry Care – How to keep your jewelry beautiful:
- Remove jewelry before showering, bathing, and sports.
- Avoid direct sunlight – wood, leather & co. can fade.
- Hands off – constant touching leaves grease and dirt.
- No aggressive cleaning agents such as chlorine, salt water, or disinfectants.
- Apply cosmetics and perfume first, then put on jewelry.
Specifications
All details of the Casio GM-2100B-3AER at a glance.
Basic data
- Target group
- Men
- Style / Occasion
- Sport
- Manufacturer
- Casio
- Model series / Collection
- G-Shock
- Model number
- GM-2100B-3AER
- Manufacturer model number
- GM-2100B-3AER
- EAN / GTIN
- 4549526304729
- Display type
- Analog-to-Digital
- Water resistance in bar
- 20
- Colour
- Green, Grey, Anthracite
- Other features
- World Time, 5 Alarms, Hand Shift Feature, Shock Resistant, Super Illuminator
Case & Construction
- Case material
- Stainless Steel
- Case colour
- Anthracite
- Case diameter in mm
- 44.4
- Case shape
- Round
- Case height in mm
- 11.8
- Weight
- 72 g
- Bezel material
- Stainless steel
- Watch glass
- Mineral Glass
- Case back
- Screwed
Dial & Display
- Dial colour
- Green
- Numerals & Indices
- Bar Index
- Second hand
- No
- Luminous material (Lume)
- Yes (Pointers & Indices)
Movement & Drive
- Drive type / Movement
- Quartz (Battery)
- Calibre / Movement
- 5611
- Date display
- Yes
- Stopwatch function
- Yes
- Day display
- Yes
- Timer
- Yes
- Number of batteries
- 2
Strap & Clasp
- Strap material
- Resin
- Strap colour
- Green
- Strap width in mm
- 26
- Clasp
- Pin buckle
- Quick-release system
- Yes
- Max. wrist circumference
- 21 cm
Questions about this product?
We're happy to help.Shipping & returns
Shipping
We ship with DHL GoGreen; large items such as grandfather clocks are sent by freight carrier.
Shipping costs for your country are shown in the cart.
Returns
You have 100 days to try your order at your leisure. If something isn't right, simply send it back.
Casio – Functional Watches for Modern Everyday Life
Casio became known in the 1970s for wristwatches that redefined technology and everyday usability. Digital displays, innovative functions, and robust construction made the brand popular worldwide.
To this day, Casio wristwatches stand for reliability and practical use. They are aimed at people who value functionality, durability, and a clear price-performance ratio.
Shop Worry-Free & Securely
Whether for yourself or as a gift: We guarantee you 100% original products from renowned manufacturers. Your order will leave our premises insured and will reach you the very next business day.
Should the item not fit perfectly, take advantage of our generous 100-Day Returns – uncomplicated and free of charge. Experience for yourself why over 13,000 customers have found their timepieces with us.
We answer your questions
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